Ribbed expanded-metal lath



Dec. 10, '1929. F. c. AREY RIBBED EXPANDED METAL LATH Filed July 28,1927 Patented Dec. 10, 1929 UNITED STATES PATENT OFFICE FRED C. AREY, OFOAK PARK, ILLINOIS, ASSIGNOR TO JOHN W. GLEASON, OF PITTS- DURGH,PENNSYLVANIA; FRANK W. BORA, OF NEW YORK, N. Y.; WILLIAM F.FBEUDENREICH, F KENILWORTH, ILLINOIS; AND FREDERICK H. CHETLAIN, OFCHICAGO, ILLINOIS; AND HIMSELF, AS TRUSTEES RIBIBED EXPANDED-METAL LATHApplication filed July 28,

The present invention relates to expanded metal lath of the ribbed type,andhas for its object to improve the same.

Specifically considered, my invention has for its object to produce anexpanded metal that will have the strength and rigidity of expandedmetal provided with heavy solid ribs while permitting the plaster to beeffectively keyed and exposed to the air on both sides; thereby securingdesired strength and rigidity in the lath with eifectlve keying of theplaster and without requiring the plaster to dry unevenly and crack.

A further object of the present inventlon is to produce a ribbedexpanded metal in which all of the longitudinals have their flat facesparallel and lying at an angle to the plane of the sheet, whereby theplaster may be evenly spread across the same in a single 2 motion orsweep.

A further object of the present invention is to produce an expandedribbed metal lath that will require a minimum amount of plaster forkeying purposes.

The various features of novelty whereby m invention is characterizedwill hereinaf t e r be pointed out with particularity in the claims;but, for a full understanding of my p invention and of its objects andadvantages, reference may be had to the following detailed descriptiontaken .in connection with the accompanying drawing, wherein:

Figure 1 is a plan view of a fragment of a flat sheet showing thearrangement of shtting to produce my improved lath; Fig. 2 1s a planview of a fragment of the expanded sheet; Fig. 3 is a section takenapproximately on line 3-3 of Fig. 2; Fig. 4 is a section takenapproximately on line 4-4 of Fig. 2 on a larger scale; and Flgs. 5 andare views similar to Figs. 3 and 4, respectwely, showing a modification.

In carrying out my invention the metal sheet is divided into alternatingsolid and sli-tted sections. Furthermore, the slits in alternatesections are parallel. with the longitudinal axis or long edge of thesheet, while theslits in the remaining sections are arranged at an acuteangle to such axis. In 50 Fig. 1 the solid sections are indicated at A,

1927. Serial No. 208,915.

the ends of the strands remaining in such lane. The strands of thesections B may all be bowed so as to lie on one side of the sheet asshown in Figs. 2, 8 and 4, or they may be bowed alternately in oppositedirections from the sheet, as shown in Figs. 5 and 6.

Referring to Figs. 2, 3 and 4, it will be seen that the slit sections Ahave all been bent to form continuous longitudinal ribs 1 lying parallelwith each other but'at an angle of about sixty degrees to the plane ofthe sheet; or it may be said that the members 1 constitute flanges onthe slit sections, lying at an acute angle thereto. The sections C havebeen transformed into a diamond mesh comosed of longitudinal strands 2lying with their flat faces parallel with the flat faces of the ribs 1,and transverse strands 3. It will be seen that when plaster is swepttransversely across the sheet the resistance offered by all of thelongitudinals will be uniform. The sections B are expanded by bowing thestrands out of the plane of the sheet to form loops 4; the strands beingstretched in order to provide the requisite length of metal to producethe bow effect.

It will thus be seen that the sheet, when expanded, comprisesreticulated sections al ternating with comparatively narrow solidsections; the reticulated sections differing in character, some of thembeing in the form of diamond mesh and the others being of a character asnot to provide openings as large as in the diamond mesh, and thereforeconserving plaster while permitting a sufficient amount of plaster topass through the same to form effective keys.

In Figs. 2 to 4; all of the bowed strands lie on one side of the sheet.If desired, some of the strands may be pressed down and the others up,as shown in Figs. 5 and 6; the strands 4 corresponding in position tothe strands 4 in Figs. 2 ,to 4, and the strands 5 lying on the oppositeside of the sheet.

While I have illustrated and described with particularity only a singlepreferred form of my invention, I do not desire to be limited to theexact structural details thus illustrated and described; but intend tocover all forms and arrangements which come within the definitions of myinvention constituting the appended claims.

I claim:

1. A sheet of ribbed expanded metal comprising reticulated sectionsalternating with solid sections, alternate reticulated sections beingexpanded in the plane of the sheet, and the remaining reticulatedsections having strands bowed out of the plane of the sheet.

2. A sheetof ribbed expanded metal comprising reticulated sectionsalternating with solid sections, alternate reticulated sections havingstrands formed by slits lying at an acute angle to the long axis of thesheet, and

. the remaining slitted sections havingstrands formed by slits arrangedparallel with said unexpanded sheet.

axis.

3. A sheet of ribbed expanded'metal comprising open sections alternatingwith solid sections, alternate open sections being formed of strandscrossing each other, and the remaining open sections retaining the.width of tion.

F RED C. AREY.

the corresponding portions in the original 4. A sheet of ribbed expandedmetaleontaining solid sections bent along a longitudinal line to formparallel flanges lying at an angle to the plane of the sheet,reticulated v sections adjoining said flanges and having longitudinalstrands whose broad faces are all parallel with said flanges.

5. In a sheet of ribbed expanded metal, a solid longitudinal section andan adjoining reticulated section, said solidsection having a portionadjoining the reticulated section lying at an angle to and projectingbeyond the plane of the original sheet, and said reticulated sectionbeing in the form of diamond.

mesh some of whose strands form continuous longitudinal elements in thesheet and having broad faces lying parallel to the aforesaid portion ofthe solid section adjoining the reticulated section.

6. A sheet of ribbed expanded metal having reticulated sectionsalternating with panels whose marginal longitudinal portions areparallel and lie at an angle to and on opposite sides of the originalplane of the unexpanded sheet, and saidreticulated sections consistingof transverse strands connected at the ends to said marginal portionsand longitudinal strands all of whose broad faces are

